J-10400 |
Knob design patent # D6623, April 29, 1873 by George W. White assigned to P & F. Corbin. Shown in 1872 Corbin supplement catalog page 106, with escutcheon on page 110. Made in 2 1/2 and 2 1/4 inch diameter. Hex version is C-10600.
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Dates:C. 1872 |